东江干流中下游河床近期演变特征及趋势分析  

The Recent Evolution and Future Trend of Middle and LowerReaches of Dongjiang River

作　　者：黄长伟 HUANG Changwei(Guangdong Hehai Engineering Consulting Co.,Ltd.,Guangzhou 510610,China)

机构地区：[1]广东河海工程咨询有限公司,广州510610

出　　处：《广东水利水电》2022年第12期37-42,共6页Guangdong Water Resources and Hydropower

摘　　要：随着社会经济高速发展,土地及岸线资源需求迅速增加,河道受人类活动影响日益加剧。该文以东江干流中下游(河源至惠州)为研究对象,分析其近期的河床形态演变特征,并对河道未来的河床演变趋势进行预测。分析结果表明,1997—2003年,河段基本处于自然演变过程,总体表现为小幅淤积;2003年以来,东江干流中下游则存在明显的河床下切现象,人工挖砂、自然冲淤等因素是河床往窄深方向发展的重要原因。但随着河道利用管理的加强,没有过多的人类活动干扰下,河床也将从大范围的侵蚀下切转变至慢慢回淤,恢复河道自然属性。With the rapid development of social economy,the demand for land and shoreline resources is increasing rapidly,and the impact of human activities on rivers becomes greater.Taking the middle and lower reaches of the Dongjiang River(from Heyuan to Huizhou)as the example,This paper analyzes the recent evolution characteristics of the riverbed,and predicts the future evolution trend of the river.The results show that from 1997 to 2003,the riverbed was slightly deposited under natural conditions.Since 2003,the riverbed was eroded largely in the middle and lower reaches of the Dongjiang River.Sand excavation,natural scouring and silting are the important reasons for the down-cutting of the riverbed.However,with the strengthening of river management and the decrease of human activities,the evolution trend of the riverbed will change from largely eroding to slowly silting and restoring the natural attributes of the river.

关 键 词：东江 人类活动 河床演变 

分 类 号：TV147[水利工程—水力学及河流动力学]